Isopolar magnetron supported with rigid insulation in a remote housing

In a microwave magnetron of the type having a cavity-resonator anode, a cathode space, a cathode in the cathode space, and means to furnish magnetic flux in the cathode space for magnetron operation, an assembly of an anode structure comprising a generally tubular anode support having first and second ends and said cavity-resonator anode support from said tubular anode support between said ends, output means for said magnetron coupled to said anode, voltage insulator means affixed one to each of said ends, a magnetic flux providing structure comprising magnetic pole piece means affixed to each of said insulator means for providing said magnetic flux and having elongate magnets extending in opposite directions from each of said pole pieces, and a magnetic return strap connecting the remote ends of said magnets around said anode structure, said cathode means extending between said pole pieces in said cathode space, a housing surrounding and spaced from said anode structure, said flux producing structure and said cathode means, and solid insulator material filling the space between said housing and said structures for rigidly supporting the same within said housing, said housing having an access passage for coupling to said output means a first electrical connector passing through said housing and said filling material to said anode support, and a second electrical connector passing through said housing and said filling material for connection to said cathode means.